AC_DEFUN([DOVECOT_WANT_LZ4], [

if test "$want_lz4" != "no"; then

AC_CHECK_HEADER(lz4.h, [

AC_CHECK_LIB(lz4, LZ4_compress, [

have_lz4=yes

have_compress_lib=yes

AC_DEFINE(HAVE_LZ4,, [Define if you have lz4 library])

COMPRESS_LIBS="$COMPRESS_LIBS -llz4"

], [

if test "$want_lz4" = "yes"; then

AC_ERROR([Can't build with lz4 support: liblz4 not found])

fi

])

AC_CHECK_LIB(lz4, LZ4_compress_default, [

AC_DEFINE(HAVE_LZ4_COMPRESS_DEFAULT,,

[Define if you have LZ4_compress_default])

], [

])

], [

if test "$want_lz4" = "yes"; then

AC_ERROR([Can't build with lz4 support: lz4.h not found])

fi

])

fi

])